Sewing-machine for finishing buttonholes.



J. KIBWICZ. SEWING MACHINE PoR PINISHING BUTToNHoLEs.

* AMLIOATION FILED MAY 4, 1912.

1,047,537. Patented Dec. 17,1912.

2 SHEETS- SHEET 1.

J. KIEWICZ.

SEWING MACHINE POR FINISHING BUTTONHOLES.

APPLICATION ULEB MAY 4, 1912.

Patented Dec. 17, 1912.

dig@ UNITED STATES PATENT. OFFICE.`

JOHN KIEWICZ, F BOSTON, MASSACHUSETTS, ASSIGNOR TO 'PHE REECE BUTTON HOLE MACHINE COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION 0F MAINE.

SEWING-MACHINE ron rrNIsnrNG iau'r'roiiriaorlns.`

Specification of Letters Patent. f Application aiea May 4, i912. serial NoLeaaoai.

Patented Dec. 17, 1912.

To all 'whom 'it may concern:

Beit known lthat I, JOHN Kinwioz, a citizen of the United States, residing at Boston, county 'of Sudolk, State of Massachusetts, have invented an Improvement in Sewing- Machines for Finishing Buttonholes, of

'whicl'ithe followingdescription, connection with the accompanying drawing, is a specification, like characters on the drawing representing like parts.

This invention relates to sewing machines 'of that type which are used for finishing and particularly to -sewing niabiittonholes,

chines-which are provided with a-vibratiiig 4bender to engage -the work and make a bend therein and with ,a needle operating in a plane arallel to the general plane ofthe work and adapted to penetrate the bent portion of the work thereb to enter and leave the Work on the same side thereof. A machine of this general type is shown in the Reece Patent, No. 404,863, June 11, 1889,

and an improved machine of this same type is illustrated in Patent No. 987 ,966, March 28, 1911.- y

The object of the present invention is to improve generally machines of the type l above referred to so as-tomake them capadriving .pulley ble of operating at an increased speedgto simplify the construction, and otherwiseto provide the improvements, which will be more fully hereinafter described and then 'pointed out in the appended claims.

Referring to the drawings which illustrate an embodiment of my invention, Figure l is a side elevation of the machine with the base shown in vsection to betterillustrate some of theoperative parts; Fig. 2 is an end view of presser-foot carrier; Fig. 3 is a'section on the line w, Fig. 1; Fig. 4 is a section on the line y- -i, Fig. 1; Fig. 5 is-an under side plan View? of the machine', F igl. 6 is an enlarged plan .view of the shuttle-carrier with the shuttle therein; Fig. "7 is a sect-ion on the line a-.a, Fig. 6; Fig. 8 is a section` the bender carrier andl is journaled the driving 3 which is loosely mounted..

tliereon, but which .isadapted to be clutched thereto by a clutch mechanism 4 of some suitable type, that herein shown being simi-v lar to the general construction of the clutch mechanism illust-rated in Patent No. 987,966. Inasiiiucli as the clutch mechanism forms no part of the present invention I have not deemed it necessary to further describe it herein, except to say that the clutch is rendered operative to clutch t-lie driving 'pulley -43 to the shaft by means of a starting vlever 5 which is pivoted te the base 1 at 6 and which is connected by a link 7 to a suitable treadle, not shown, so that when the treadle is depressed and theleft-hand end of the starting lever 5 iii Fig. 4 is-olepressed, the clutch will be thrown in operation. The

needle 8 reciprocates -in a horizontal plane I directly beneath the -bed plate 1, and it vmay be operated from the driving shaft 2 by any suitable mechanism, such as illustrated in 'either of the above-mentioned patents. As

the needle-operating mechanism does not l forni part of the present invention, it will not be necessary to describe 4it except to;

say that 9 lis a crank disk on the shaft 2, which crank disk is connected by the link v10 with ablock 11 secured to a1 horizontally and longitudinally-reciprocating needle bar l to which the needley 8fis secured.

12 designates the switch cam on the main shaft- 2 by` which the needle bar and needle are vibrated laterally, all as described in said Patents No. 404,863, and No. 987,966.

Inthe present improvement the bender 13 bywhich the material is bent into the throatplate while the needle makes its thrust through l.the 'bend thereof, is carried lby a bender-carrier 14 which is pivoted intermediateof its ends at 15 upon the base plate 1. This bender-carrier receives its vibrating movementfrom the shaft 2 by a novel mech- -anismw'hich is particularly designed to aldiiiit of a very high speed of operation without producing any -`appreciable vibration. Asshowiiin Fig. 4 the shaft 2 has thereon -a cam .member-17 provided with a cam Groove 170 which receives a roll 18 on an intermediate member 19 that is pivotally sustained at one end, as atf 20. The end 16 of the bender-carrier is provided with an adjustablebearing member 21' preferably in the form of a screw screw-threaded-into the part 16-'and provided with a locknut 210 for lockingit in position. Yielding mea'iisll are provided for holding the bearing projection 21 against the intermediatemember 19, and in, the present `embodiment this yielding means is in the form yOf'an arm 7 0 which is formed as part of the intermediate member 19 and is shaped to overlie` the end 16 of the bender-carrier.l Av comparatively stid springy 71 is-interpose'd' between the portion 16 of the bender-carrier and the arm and means are preferably provided for adjusting the tension of said spring.V As

herein shown the partlG lis providedwithy a recess 72 in which one end of the spring 71 1s received and the arm 70carr1es an adjusting nut 73 provided with a recess 74 in.

which the other end'of said spring isreceived. The intermediate member 19 is given a positive Vvibration by' means -of the cam groove- 170, and this posit-ive movement is trans- .ferred to the bender-carrier through the projection 21 'andrspring 71.` The projection '-21y allows for an adjustment ofthe bender-carrier 'to suit the character of the Awork being operated on, and the spring 71 holds the projectionv 21 in contact with the intermediate member 19. Since this spring is carried byI the vibrating member 19,1the spring is notcompressed and expanded at each vibration of the bender-carrier,I but merely constitutes a yielding connection between the bender-carrier and the arm 70 and insures that'the bender-carrier will be.

held in engagement-With' the member 19 at all times.

The construction wherein the spring which holds the bender-carrier againstd the intermediate member 19 'is sustained by said member and moves therewith is one which permits of a high speed of operation without danger of the bender-carrier jumping' or separating from 'the intermediate member, for the spring 71 is not constantly expanded and contracted, as isthe case where the spring is -secured to a fixed support, but instead' bears on the bender-carrier with a uniform pressure during every position thereof. w

By pivoting the bender-carrier at its centraly portion, as illustrated, said carrier is substantially balanced so far as distribution of the weight relative to the 4pivot is concerned, and this feature is advantageous in that it readily lends itself toa rapid operation of the parts. The bender.y is yieldingly sustained in the bender-carrier, and for this purpose the head 24 of the bender-carrier is provided with an opening in which the benderis received, and the bender is provided .with astem 25 which is encircled by... a spring 26, one end of `which engages anA adjustable nut y27, and the other end of which engages a yshoulder 28 .formed onthe bender. The bender. hasextending laterally therefrom a pin 29 operating in a slot30 in` the head 24. The slot permits a slight movement of the bender relative to the bendercarrier, thus providing -forA operating `on v work'of different thicknesses, and the ,pm in the slot also holdsthe bender from turning in the head 2-1about its vertical axis.

300 designates the presser foot of usual construction, and this is sustained .by a. presser-foot carrier 31 which is also pivoted to the bed 1 at 15.4'The presser-foot carrier 431 is formed with the extension 32 which is acted upon by a spring 33 that tends to elevate the extension and thereby depress theA presser foot, and said extension'is also engaged by a finger 34 formed integral withv ,the starting rvlever 5. When the machine is rg0 at rest and the starting lever occupies the 'if-.

position shown in Figs. 1 and 4f the fngerr 34v on the starting lever holds the presserv foot in elevated position. When, however,`

the starting leverv is depressed, to set the clutch in operation, then the finger 34 is elevated, thus allowing the spring 33 to de- Y press the presser foot into engagement with the work. The presser foot remains in such engagement during the entire operation of the machine, it being yieldingly held in po- 4 sition lby -the springy 33. Whenever the treadle is released therebyto disengage the clutcln'the finger 34 is brought against the extension 32 of the presser foot carrier by the spring 91 thereby'elevating the presser foot, and the presser footV will beheld ele-- vated while the machine is at rest and until r Ahead of the -stud 34 prevents any lateral movement of the proper position.

The shuttle 35 is ofthe oscillatory type and it' is sustained by an oscillating shuttle presser foot and holds it in carrier 26. In order t' produce armachine capable of operating at a high rate "of speed, it is essential thatthe means for operating. the shuttle carrier should be of such a construction that theshuttle can be operated in time with the rapidly-operating benderM without subjecting the machine to any undue vibration, and myinvention, therefore,l involves a shuttle-operating mechanism, especially designedto admit lof: an extremely rapid operation which coperates with the rapidly-operating bender to produce a high speed machine.

The shaft 2 has mounted thereon an eccentric 37, the eccentnic strap 38 of which is `connected by a link 39 `with'one arm 40 of a bell-crank lever pivoted to turn about a vertical Astud 41,l and the other arm 42 of which is pivotally connected to a link 43 that is connected to an oscillating membery 44 pivoted at 45.. The lmember 44 is provided with a slot 46 in its end in which is received a rollf47 on the end of an arm 48 extending from the spindle of the 'shuttle-carrier whereby oscillating movement of the member 44 will oscillate the shuttle carrier. It will be noted that the arm 40 of the bellcrank is much vshorter than the arm 42 and that the pivotal axis 45 of the oscillating member 44 is so positioned 'that the link 43` vrapidly'witl-iout any appreciable jar or vibration, and this construction when operated with the means herein described for operating the bender and presser foot provides a machine which can be run at a -high rate of speed. p

The arm ofthe belllcrankworks'on the arel of a circle and in order that there may he no binding between ravid arm and the `link 39, or between the eccentric lstrap and the eccentric due to the curved vdirection of movement of the arm'40, I preferably will use a ball-and-socket connection between the arm 40 and the link 39 and will make the face of the eccentric rounded slightly, as

' shown at 81.- This permits a sufficient -rocking motion/of the eccentric and link 39 to conform to the curved motion of the arm 40.

The shuttle carrier 36 is formed with a rest or support 49 over which the point of the needle '8 passes during the penetrating movement thereof, and I have herein shown said shuttle-carrier as having the guard ork bridge piecek 50 whichl extends' over that portion of the rest 49 with which the needle to provide the bed plate withopenings 60 has contact during the operat-ion of the machine.v This guard 50 lforms with the rest 49- a loop or lopening v51 throughl which the needle point passes, and it provides a guard for the needle point which will prevent the shuttle thread from becoming entangled therewith. 1

. In machines of this type it is customary and 61 above the shuttle andthe .needleoperating mechanism, respectlvely, and to close said openings '.with removable plates, 62,y 63, respectively. The plate 63 is .usa-

ally 1neveled at itsedges and slips into, undercut guiding lips '64 formed on vthe bed and the guiding lips 64. The vibrations due to rapid operationof a machine of thistype vis often sufficient to overcome this friction so that the plate 63' will gradually slide -away from the feeding mechanism and throat plate 65. To prevent this from octure 66 and provide a locking button 67 which is adapted to enter said aperture and 'i is provided with a rounded upper surface, said button being yieldingly sustained in some suitable way, .as `by means of a spring 68. The button 67 normally locks the plate ator wishes t-o remove said plate for any purpose he places his thumb or linger on the button 67, thus depressing it until the cylindrical portion thereof is forced out vfrom the aperture 66 when by pushing longitudinally of the lplate 63 with the thumb .which is at'this time in contact with the 66, said plate can be withdrawn. When the will. automatically snap into the aperture 66, (thus locking the plate.

The plate 62 is usually provided` with the straight so that the plate can be dropped into position by irst bringing the edge 69 against the lip 59 and then swinging the edge 58 down into position. It has been customary heretoforeto lock the plate 62'in place by means of a fiat headed screw which is eut away at one edge. In order to lock the plate 62 in position I provide the locking stud 57 vwhich is provided with the locking head A56 vand is .provided with an arm 55 'thatextends out through a 'slot in the side of the bed plate'frame 1. This head 56 is eceentrically mounted on the stud so that when thepparts are in the position shown in Figs. land 9 the head overlies the edge of the plate62 and locks it in place, but when `,the stud is turned through approximately 900, the head 56 is carried oli' from the edge of the plate thereby unlocking it. turning movement of the stud is accomplished by swinging the arm 55 from the 'full to the dot-ted line positionFig. 9. f'Ihis arrangement `is veryadvantageous, as it does not require the use of 'a screw-driver'or' any other implement for unlocking the'plate 62 and enables the operator'to more quicklyv remove the plate when it is necessary to sev cure access to theshuttle. ,V y

WhileI have lillustrated'herein one.v emlto illustrate theprinciple thereof, I do not wish to be limited tothe constructional details shown, as manyof them may be varied A without departing from the spirit of the ptt-he machine, it being held-.in 'place ,by the frictional en gagexnent between the 'plateA inventton. f. 4- .'Hagung fully -.eserlhedjiny; invention,

lcurring I form the plate 63with an aper- 63 from movement', but whenever the oper- .plate 63 -and partially vfilling the aperture platef is put in position again-the'button '67 -beveled `edge 69 to engage the undercut, guiding lip 59, the opposite edge 58 being This i 12ovr bodiment of'my' invention which is sufficient what I claim as new and desire to secure by Letters Patent is'z- 1. In a lhigh' speed buttonhole finishing machine, the combination with a bed plate,

5 of means to make bends in thewvorksupported on said bed plate, high speed stitchformingl mechanism comprising a needle, an

oscillatory shuttle carrier situated beneath the bed plate', a shuttle carried thereby,l a

driving shaft., an elbow lever, an oscillating pivotedmember operatively connected to the shuttle carrier, 'a' link connecting one 'arm of vsaid elbow lever-to said oscillating member, an eccentric on the driving shaft,

ancl an eccentric strap encircling saidv ec-l centric and provided with an arm having a ball-a11dsocket connection with the yother arm of said elbow'lever, Y

2. In a high speedbuttonhole inishing machine, the combination with ,a bed plate, of a driving shaft', abender to make bends in theJ work, bender-operating mechanism capable of, o-perating at high speed wit-hout producing undue ar or vibration, a shuttle,4

an oscillatory shuttle carrier therefor, and a high speed shuttle carrier operating mechanism comprising an elbow lever pivotnism'therefor, an oscillatory shuttle carrier provided withl a laterally-extending arm having a roll, an oscillating member pivoted intermediate of its' ends and forked at one' end to engage said roll, an elbow lever having a long and a short arm, means connect-1 ing the long arm with said oscillatory mem-'- ber, a driving shaft, and an eccentric on the drivingsh'aft connected to said short arm.

4. In a buttonhole-nishing machine, the 5o combination with means to form bends in the work, of a horizontal reciprocable needle, an oscillatory shuttle carrier and a shuttle sustained thereby, said shuttle carrier havc ing an elongated rest 49 to sustain the needle, and a guard member 50 extending parallel to said rest and forming therewith an elongated needle-receiving opening.v

5. In a lbuttonhole-finishing machine, rthe combination with a bed plate, of stitchforming mechanism,- a bender-carrier centrally pivoted'directly to the bedplate, a bender sustained by vsaid carrier at one end thereof, a drivin shaft, a cam on said shaft, vand an adjustab e connection'betwee said 66 cam and the opposite .end of the carrier by which said carrier is vbrated and the throw thereof is regulated. r

6. In a machine of the class described, the combination witha bed plate, of stitch-form ing mechanism, a'v ybender carrier vpivoted 70' centrally directlyto the bed plate, a bendery sustained by one end of said carrier,a driving shaft` provided witha cam, an intermediate member operated by said cam yand having engagement with the opposite end of saidcarrier, and a spring to hold the end of the carrier in engagement with the intermediate member. 7 In a machine of the class described, the combination with a .bed late, of stitchforming mechanism, a ben er carrier pivoted centrally directly to the bed plate, a bender sustained by one end ofsaidcarrier, a driving shaft provided with a cam, an in-v y' termediate member operated by said cam and having engagement with the opposite end of Said-carrier, and a spring sustained bythe intermediate member and operating to hold the endof the carrier inengagement withsaid member. l

" 8: In a device of theclass described, rthe combination with a' bed late, of stitch- Aforming mechanism,a ben er carrier pivotedjcentrally directly Ito the bed plate, a

bender sustained by said carrier at one end thereof, a driving shaft,y a cam on said shaft, an intermediate member operated 'by said cam and having a forked portion bet-'Ween the' arms of which the end of the carrier is situated, said end of the carrier having engagement with one off lsaid arms, and a Aspring interposed between. said end of the carrier and the other arm;

9. In la device of the class described,` the combination with a bed plate, of stitchforming mechanism, a bender carrier pivoted centrally directly to the bed plate, abender sustained by said carrier aty one end thereof, a driving shaft, a cam on said shaft, a'pivoted intermediate member operated by said cam, said member having-a forked portion' between thev arms of which the vbender carrier is situated, said end of.- they carrier having an adjustable bearingl which engages one arm of sai'd fork, and a sprin carried by the other arm of said fork an engaging said carrier..

10. In a buttonhole-nishing machine, the combination with abedl plate, of stitchforming'mechanism, a bender carrier cen- 120 trally pivoted directly to the bed plate, a bender sustained thereby, a 'driving' shaft, a. v cam yonv theshaft, an adjustable connection between said cam'and one end of the carrier by which said bender carrier is vibrated, 'al 125 presser-foot'carrier also pivoted directly/.to the bed plate, a spring for yieldingly hold- Y ing the presser foot 'against the work, and a connection between said two carriers which permitsthe bender carrier to vibrate relative 13o to the presser-foot carrier but prevents lateral movement of one relative to the other.

1l. In a device of the class described, the combination With a'bed plate, of a bendercarrier centrally pivoted thereto, means t0` 12. In a high speed buttonhole nishing.

machine, 'the combination With a driving shaft, of a shuttle, an oscillating shuttle carrier, a high speed shuttle carrier operating mechanism actuated by the driving shaft, a bender carrier, a bender sustained thereby, and a highspeed bender-carrieroperating mechanism comprising an 4oscillatory intermediate member having. two arms between which the bender carrier is received, a spring sustained by one of said arms and acting to yieldingglyv hold said carrier against the other arm, and a cam on the driving shaft for giving the intermediate member a positive motion in both directions. In testimony whereof, I have signed my name to this specification, in the presence of tWo subscribing Witnesses.

' JOHN KIEWICZ. Witnesses:

CHRISTIAN H. T. HAGELSTEIN', LOUIS C. SMITH.

('opes of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, IJ. G. 

